FEATURES SPECIFICATIONS • Extremely low resistance and high precision tolerance • Low T.C.R. achieved (±50ppm/ °C) • Flameproof UL94-V-0 • Marking: Black body color with white marking TCR max.: ±50 ppm/°C Rated Ambient Temp: +70°C Oper. Temp. Range: -55°C - +125°C RW1/RW2 Series Surface Mount Four Terminal Current Sense Voltage Electrode Molded Resistive Resin Element L DERATING 100 W Percent Rated Power 80 t 60 e f c 40 d b h g c a 20 0 -55 -40 -20 0 20 40 70 60 80 Ambient Temperature, °C T Y P I C A L S C H E M AT I C Detecting Circuit R W 100 125 140 S U R F A C E T E M P. R I S E 125 Output Voltage Terminal (KELVIN terminal) Current Terminal LAND PATTERN 100 Land pattern dimensions are for reference only k 75 RW1S0CK 50 25 0 m j Power Resistance Dielectric TCR Rating Range Resistance Withstanding (ppm/°C) Qty./ Type (watts) E-12 (mΩ) Tolerance Voltage Max. Reel RW1S0CK 1 5mΩ - 50mΩ 1% 500V ±50 1000 RW2S0DK 2 5mΩ - 50mΩ 1% 500V ±50 1000 DIMENSIONS RW2S0DK Temperature Rise (°C) Input 20 40 60 80 Percent Rated Power 0 100 s inches (mm) RW1S0CK RW2S0DK L W t a b 0.425±.02 (10.8±0.5) 0.244±.012 (6.2±0.3) 0.083±.008 (2.1±0.2) 0.118±.012 (3.0±0.3) 0.031±.008 (0.8±0.2) 0.504±.02 (12.8±0.5) 0.323±.012 (8.2±0.3) 0.122±.008 (3.1±0.2) 0.197±.012 (5.0±0.3) 0.039±.008) (1.0±0.2) c d e f g 0.055±.02 (1.4±0.5) 0.047±.02 (1.2±0.5) 0.051±.012 (1.3±0.3) 0.051±.012 (1.3±0.3) 0.197±.004 (5.0±0.1) 0.079±.02 (2.0±0.5) 0.079±.02 (2.0±0.5) 0.087±.012 (2.2±0.3) 0.087±.012 (2.2±0.3) 0.236±.004 (6.0±0.1) h j k m n 0.098±.004 (2.5±0.1) 0.39 (10.0) 0.08 (2.0) 0.04 (1.0) 0.12 (3.0) 0.118±.004 (3.0±0.1) 0.47 (12.0) 0.09 (2.3) 0.05 (1.15) 0.21 (5.3) o p q r s n o r Current Electrode 0.24 0.20 0.06 0.08 0.04 (6.0) (5.0) (1.6) (2.0) (1.0) 0.31 0.24 0.09 0.13 0.06 (8.0) (6.0) (2.2) (3.2) (1.6) p q PERFORMANCE CHARACTERISTICS O R D E R I N G I N F O R M AT I O N Parameter Resistance RoHS Compliant �������������� Type & Power Rating RW1S0CK = 1 watt RW2S0DK = 2 watt Ohms R005 = 0.005� R050 = 0.05� Tolerance F = 1% D = 0.5% Packaging T = tape and reel (optional) Current Sense Power Rating Resistor (watts) ���� ���������� The part itself will be marked as follows: Ohms 10m ohms = 0.01� Tolerance F = 1% D = 0.5% S TA N D A R D PA RT N U M B E R S F O R R W S E R I E S Wattage: Tolerance: Ohms 0.00500 0.01000 0.02500 0.05000 1 watt 1% Series: RW1S0CK----FET RW1S0CKR005FET RW1S0CKR010FET RW1S0CKR025FET RW1S0CKR050FET 2 watt 0.5% 1% RW1S0CK----DET RW2S0DK----FET RW1S0CKR005DET RW1S0CKR010DET RW1S0CKR025DET RW1S0CKR050DET RW2S0DKR005FET RW2S0DKR010FET RW2S0DKR025FET RW2S0DKR050FET T.C.R. Overload Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C Low Temperature Operation High Temperature Exposure Requirement ΔR Limit Typical Within — regulated tolerance Within — specified T.C.R. ±1.0% ±1.0% ±1.0% ±1.0% Test Method 25°C +25°C/-55°C and +25°C/+125°C ±1.0% ±0.5% ±2.0% ±0.5% ±1.0% ±0.5% ±0.5% ±0.25% Rated power x 5 for 5 seconds 260°C ± 5°C, 10 seconds ±1 second -55°C (30 minutes), +125°C (30 minutes), 500 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle -55°C, 1 hour ±0.5% ±0.25% +125°C, 100 hours Check product availability at www.ohmite.com Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 13